i get the warning below while parsing WSDL for my application and this makes my system not to work properly each time it appears. any ideas pls?

the warning is as below

[WARNING] schema_reference.4: Failed to read schema document 'http://localhost:16047/VendorWSService/VendorWS?xsd=1', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not <xsd:schema>.
line 24 of file:/C:/Users/owner/Documents/NetBeansProjects/msc_project/msc_project-war/src/conf/xml-resources/web-service-references/VendorWS/wsdl/localhost_16047/VendorWSService/VendorWS.wsdl#types?schema1